From: Nigel Taylor (nigel_taylor@xxxxxxxxxxx)
Date: Sun Jan 21 2001 - 16:06:47 GMT-3
Hey All,
I'm also working on a OSPF - EIGRP - IGRP redistribution lab. In
my case the lab
required you to only use 172.17.59.x for the EIGRP and OSPF domains. The
requirement
called for the IGRP domain that is connected to use 171.68.62.93 w/ a 26 bit
mask.
Let's try some ASCII art.....
EIGRP(E1)------R3 -------(S1)---(FR, P-t-P, Area
0)---R2 ---------R1----(Area 1)
/ \
/ \
IGRP OSPF(Area 2)
(E0) (E2)
/ \
R4 R5
\
(Area 3)
Ok, I've got the EIGRP(E1) using 172.17.59.0/29. The OSPF domain is
using 172.17.59.48/28(S1) and (E2) using 172.17.59.68/30. As I said the
IGRP(E0)
is assigned 171.68.62.93 w a /26 on R3's E0 interface. I've read through
the list thread
on this but I'm still unable to see a route to the OSPF from the IGRP
domain.
I'm so tired at this point can anyone shed some light on this for me...
TIA
Nigel...
----- Original Message -----
From: David FAHED <dfahed@outremer.com>
To: Mike McSpedon <mike@mentortech.com>
Cc: fwells12 <fwells12@hotmail.com>; <ccielab@groupstudy.com>
Sent: Sunday, January 21, 2001 1:05 PM
Subject: Re: IGRP/OSPF redistribution question.
> I forgot something:
> If OSPF have a /20 network you can use15 /24 network to advertise this
network.
>
> Mike McSpedon wrote:
>
> > Regarding the first approach - I'd be careful to do that only if the
routes
> > in the OSPF domain aren't summarizable into a /24 (e.g., OSPF has a /20
> > that needs to be reachable from the IGRP domain). Regarding the second
> > approach, since Paige is an ASBR, you'll need to use the
"summary-address"
> > not the "area-range" command to summarize the /26 and /28 into /24s for
IGRP.
> >
> > HTH,
> > -Mike
> >
> > At 08:05 AM 1/21/01 -0400, David FAHED wrote:
> > >There is two way to do that :
> > >1) Create a loopback on Paige for example 10.0.0.1 - Use the default
> > >network 10.0.0.0 to announce a default route into igrp process
> > >2) All the network with a mask differente to /24 use in the ospf domain
> > >have to be announce with /24. You can use an area range with the two
> > >route in gibson - for the route 172.20.113.192/26 area x range
> > >172.20.113.0 255.255.255.0 -for the route 172.20.114.48/28 area x range
> > >172.20.113.0 255.255.255.0 - After doing that you will have only /24
> > >network on paige and you can redistribute into IGRP without problem
> > >
> > >Hope this help!
> > >
> > >
> > >fwells12 wrote:
> > >
> > > > In Jeff Doyle's example of OSPF/IGRP redistribution on page 710, is
=
> > > > there any way of letting the IGRP domain be able to ping the VLSM =
> > > > networks?
> > > >
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